Winding device



April 23, 1929. H. scHLAlcH 1,710,534

WINDING DEVICE Filed June 6, 1924 2 Sheets-Sheet l mfg .5%

QW Nb QN w mm. mm MN MMM ATTORNEYS H. scHLMCH WINDING DEVICE APril 23, 1929.

2 Sheets-Sheex 2 Filed June 6I 1924 mH-m www@ IMM. A Mw BN A .N EW 1 m. hb.. r L QM I1 l .M l .EN @N m\ mw ,mm um Patented Apr. 23, 1929.

UNITED STATES HERMAN SCHLAICH, F LONG ISLAND CITY, NEW

` WINDING DEVICE.

Application filed June 6, 1924. Serial No. 718,241,

The preaent invention relates to a Winding! device, and, is more particularly directed toward the provision of a Winding device :.ulapted for winding a double helical coil, i. e. a coil having` a plurality of layers.

In many places in the arts space requirementey dictate the use of small coils. One example of such is to be found in delicate mineure responsive instruments, euch as distance-type thermomctera. In auch an instrument the coil, preferably made ot' flat tubing, distorted by the application of internal preesure, and the indicatingr menne` operated in response to this' distortion. lfnasmnch as thc amount of movement available depends upon the length ot' the material Wound into the coil. and the available space permits only a small coil, it has been found desirable to provide coils having at least tWo layers.

The present invention contemplates the provision of a machine Suitable for Winding,r coils having: a plurality of layers. y

While the embodiment to be herein described in detail is more particularly designed lor winding:` the pressure responsive coils .euch as above mentioneth it in of course to be mitlerstood that this is merely a convenient illustrative emlmdiment of the in- "ill vention, and that the invention contemplates providing' a machine for wireline,r varioua other colle.

In the drawing` wherein this embodiment is illustrated:

5 Fia. l is a sectional view with parte in elevation, allowing the parte in the position assumed when a double coil has been conv pleted;

F 2 is an elevational view with the parte in the position assumed during the Windingr ol the .tiret laver of the coil;

Fig. 3 ie an elevational view of the coil winding nmndrelel in the position shown in Fin'. 1;

ligr.l l illustrates a modified inner mandrel; and

lfie'uree and G are end and side ele iz tional views of a coil such ae may be Wound on the present embodiment of the invention.

0 A. trame 10. adapted to be suitably as tened so afs to be stationary, is provided with tvvo spaced uprighte 11 and 12. n These uprifghte are 'provided with coaxial bearing hdlea 14 and l5 for the movable parte of the "1 winding mechanism. Thebearing hole 14 the kev 22.

in the left hand bearing is larger than `the bea-ring hole 15 in the right hand bearing, as 1t 1s designed to accommodate a larg-e diameter sleeve or outer mandrel 17. This sleeve rotatably carried in the bearing hole 14, and collars 18 and 19, fastened to the sleeve, as by lock screws 20, hold it firmly in place relative to the upright.

The outer sleeve 0r mandrel is provided with a slot 2l in which a key 2! is carried. .For convenience this key and slot are located intermediate the collars 18 and 19. The inside diameter of the outer Sleeve is pref erably the eamo as the diameter of the hole 15, and an inner mandrel, in the forni of a shaft 23 ie passed through these parte. This mandrel or shaft is provided with a long licyway 24 to accommodate the key 22. The keyway preferably extends to the left end Q5 of the mandrel so that the mandrel may be readily slid into place without removing;r This end of the innermandrel preferably provided with a spiral-stepped portion 26 of increaeing diameter for al `pm'- pose to be described, and an abutment or stop 30 is attached to the end of the mandrel.` As here shown, this stop is in the form of a cylindrical flange or head havingr an outside diameter approximately equal to that of the outer mandrel. The stop is removably attached by threading it into a tapped hole 31 in the mandrel.

The shaft or mandrel 23 is also provided with adjustable stops 32 and 33 in the form olf collars which limit the sliding movement of the mandrel relative to the frame. Fior. 1 shows the mandrel in the extreme righthand position, While Fig. 3 shows it in the extreme left position. Any convenient de vice .auch as a crank 3l may be provided for turning the shaft 23 on its axis.

In winding a coil on the present machine, the end 35 of the` atrip 36 is inserted into a Slot or kcywav 3T in the inner mandrel to anchor it to the mandrel and power is applied to turn the mandrel. The operator, or suitable guides, not showin, holds the strip in auch a` Way that a smooth regular cylindrical coil A is tightly wound onto the mandrel in the manner indicated in the drawings. As the oonvolutions approach the left end 25 ofthe mandrel the strip is wound upon the spiral ste ed `portion h6 so as to gradually increase t e djmneterof' this portion nf the coal. At or boheme this time, the inner mandrel. is moved to the right to withdraw the convolutions already formed into the inside of the outer mandrel 17, which is counter bored as shown at 38 to accommodate the partly wound coil. The adjustment of the .stop 32 is preferably such that the stop or abutment 30 is spaced trom the left end 3S) ot the outer mandrel a distance, slightly `greater than the width ot the strip being wound. This space provides room for superposing the windings so as to coil the strip to a larger diameter. The llanged stop 30 will redirect the Strip and cause the end convolutions ol the coily to be plane instead ot spiral. In order to :Further increase the diameter ot the coil to the outside diameter ot" the mandrel. 17, and to cause the outer windings B to again be spiral, the end 39 ot' the outer mandrel is preferably provided with a spiral-stepped portion /l-O as shown. The wimlingi` operation in continued, `the strip being suitably guided to form smooth coils or convolutions. rllhe two mandrels are coupled together ,tor bodily rotation on account of the key and slot .interconmctinn them, and hence they both rotate during the winding ot' the inner and the outer coils.

lVhen the winding' operation has been completed, the coil cut away from the strip, whereupon it may be readily removed ,trom the man'drels after the head or abut inent() has been removed from the mandrel and the mandrel and coil moved to the lett to withdraw the coil from the outer main drei. The resiliency ot the material will rauee the convolutions to loosen from the mandrels and allow one to readily remove the complete double coil from the machine, the inner end 35 ot the coil Sliding; out through the slot 37 which extends to the end ot the mandrel. Y

The completed coil shown in Figures and (i, from which it will appear that a long istrip han been wouinl into a ver.7 :nnall space. the co heine; ysuch that the crzpansion in all parts is additive. lVhcn. the lstrip is {lat capillary tubing, as shown. the resulting coil iii well suited 'for use as the pressure responsive element oi distance type thermomctcrs.

Accordingl lo the uioditication shown in Fie; the removable head or abutment Sill embodied in many forms and crmstruelions, and I wish it to be understood that the particular form shown is only one ot the many forms. Various moditications and changes being` poseiole, I. do not limit myseliB in any way with respect thereto.

That I claim is:

l. In a coil winding machine, in combination, meansl :tor winding a helical coil having! a i'ilurality olf convolutions comprieiuej a mandrel, means ttor windinn a second helical coil outside the lirst coil, including a rigid sleeve mandrel to enclose the first coil, and means rigidly Supporting the niandrels with provision lor relative axial movement.

2. In a coil winding machine, in combination, means tor winding; a helical coil havn ingl a i'ilurality ol convolutione compresion a mandrel, means tor windingi a second helical coil outside the first coil, including a rigid sleeve mandrel to enclose the first coil, a re movable abutment carried by one ot' said mandrels 'tor Iu'cvcntinn` the removal' o l the coils vtrom both of the winding means, and means rigidly ,eui)portiimY the mandrelY with provision 'tor relative axial movement.

3. A coil winding; machine having; means tor winding; a helical coil having a plurality ot convolutions, means for increasingr the diameter ot' the end convolutions, and means :tor windin a second helical coil outside the' tiret coil, coimjirisnrcY a rigid sleeve mandrel and means tor relatively moving;r the li 'et coil and the sleeve mandrel in the direction ot the axis of the latter.

l. A coil winding device comprising' inner and outer niandrels, means couplingr thc mandi-els together for bodily rotation, the outer mandrel beiner in the torni o t an openended sleeve ot larger diameter thanthc other, the inner mandrel beingr slidable will in the outer mandrel and eizteiulinn beyond the open cud thereof.

A coil wiiulinn4 device ha viimr two mandrcls` coupled together Al'or bodily rotation, the outer mandrel beine in the l'orm ot au open-ended Sleeve ot lai-,ler diameter than the other` the inner mandrel beingr slidable within, the outer mandrel and extendingr beyond the open end thereof, and a stop to prevent witlulrawinn the cud ot the ,inner mandrel inside the outer mandrel.

(l. A coil wiiulinir device comprisini,r inner and outer mandi-clin means` coupling;l the inundrclel together tor bodily rotation, the outer mandrel herr;r in the 'toi-m oil an opencndcd sleeve ot larger diameter than thc other, means tixcdly siipportiuci the outer mandrel. the inner mandrel being elidabic within the outer maiulrel and extending lie-- yond the open end thereof, and a remoi'ahic head 'tor the inner mandrel.

7. A coil winding devine havinej two man drel coupled together for bodily rotation, the outer mandrel being in the form of an loo open-ended sleeve of large-r diameter than the other, the inner mandrel being slidable within the outer mandrel and extending beyond the open end thereof, a stop to prevent witl'idrawing the end of the inner mandnel inside the outer mandrel, and a removable head for the inner mandrel.

8. A coil windingr device having two mandrels coupled together for bodily rotation, the outer mandrel being in the form of an open-ended sleeve ot' larger diameter than the other, the inner mandrel being alidable within the outer mandrel and extending,r be yond the open end thereof, each ot the mandrels having provieions for gradilally increasing;r the diameter of the coil an it passersV from the inner mandrel to the outer mandrel.

E). A coil windingr device having;r two mandrels coupled together for bodil rotation, the outer mamlrel being in the torni of an open-ended sleeve of larger diameter than the other, the inner mandrel being slidable within the outer mandrel and extendimglr beyond the open end thereof, and a stop to preventivithdrawing` the end of the inner mandrel ineide the outer mandrel. the inner mandrel being sutliciently spaced inside the outer mandrel to accommodate the windings ot' a coil..

l0. A coil Winding device having: two mandrela coupled together for bodily rotation, the outer mandrel beingr in the form of an open-ended sleeve of larger diameter than the other, the inner mandrel being slidable Within the outer mandrel and extending beyond the open end thereof, and a stop to prevent withdrawing the end of the inner mandrel inside the outer mandrel, each of the mandrels having,y provisions for grad- Vually inifreasing the diameter of the coil aa it passes from the inner mandrel to the outer mandrel.

ll. A. coil winding device havingr two mandrels coupled together for bodily rotation, the outer mandrel beiner in the form ot' an opeirended sleeve of larger diameter than 'the other, the inner mandrel being alidable Within the outer mandrel and ex tri-udiner beyond the onen end thereof, and a stop lo prevent withdrawin'g;v the end of the inner mandrel inside the outer inamh'cl, the inner mandrel having a slot adapted to receive the inner end o't` the coil, aaid slot extending to the end of the mandrel to permit :Sliding the coil oft' the mandrel.

12. A coil Winding device having,y two mandrels coupled together for bodily rotation, the outer mandrel being in the form of an openended sleeve of larger diameter than the other, the inner mandrel being slidable within the outer mandrel and extending,r beyond the open end thereof, and a stop to preventwithdrawing the end of the inner mamlrel, the inner mandrel being Suflicienb ly spaced inside their outer mandrel to accommodate the windings of a coil, each of the mandrels having provisions for gradaally increasing the diameter of the coil aa it passes from the inner mandrel to the outer mandrel. i

13. A coil winding device having two mandrels coupled to ,therltor bodily rotation, the outer man `rel being in the form of an openended sleeve of larger diameter than the other, the inner mandrel being,r slidable within the outer mandrel and extending beyond the open end ther-eef, and a stop to prevent withdrawing the end ot' the inner mandrel inside the outer mandrel, the inner mandrel being sulliciently spaced inside the outer mandrel to accommodate the windings of a coil, the inner mandrel having a slot adapted to receive the inner end ofthe coil, said alot extendin f to `the end ofthernan drei to permit sliing the coil off the mandre i 14. A coil winding' device having two mandi-els coupled together for bodily rotation, the outer mandrel being in the form of an openeended sleeve ot larger diameter than the other, the inner mandrel being slidable within the outer mandrel andertending beyond the open end thereof, and a stop to prevent withdrawing the .end of the inner mandrel inside the outer mandrel. the inner mandrel being sufficiently spaced inside the outer mandrel to accommodate the windings of a coil, each of the mandrels having provisions for rradually increasing the diameter of the coil as it passes from the inner mandrel tothe outer mandrel, the inner mandrel having a slot adapted to receive the inner end of the coil, said slot extending to the end of the mandrel to permit sliding the coilol' the mandrel.

15. In a coil windingr device, a frame, a mandrel mounted in the frame for rotation and for bodily movement alon its axis, said mandrel exteniilin;r beyond ille frame and having a longitudinal slot extending,r to t the end thereof, a removable head at the end of the mandrel, stops for limiting the bodily movementof the mandrel in the frame, an outside sleeve keyed to the mandrel and rotatably mounted `in the frame,

Said Sleeve extending beyond the frame nearly to the end of the mandrel when the mandrel is in its inner position.

lli. ln a coil Winding device, a frame, a mandrel mounted in the frame for rotation and for bodily movement aloner its axis, said mandrel extending beyond thetframe and having a longitudinal slot extending to the end thereof, a removable head at the end of the mandrel. stops for limiting the bodily movement of the mandrel in the frame, an

lill) i lill outside sleeve keyed to the mandrel andirotatably mounted in the frame, said sleeve extending beyond the` frame nearly to the end olf the mandrel when the mandrel is in its inner position, and havingr a spiral stepped portion for changing the diameter oit the coil from the diameter of the mandrel to the diameterl of the sleeve.

17. In a eoil Windingr deviee, a frame, a mandrel mounted in the trarne Ytor rotatiorl and for bodily movement along its axis, said mandrel extending beyond the trame and having' a spiral stepped portion at the end thereof l'or gradually changing` the diameter ot the coil, a longitudinal .slot extending' to said end, a removable head at the end of the mandrel, stops itor limiting the bodily move ment of the mandrel in the trame, an out side .sleeve keyed to the mandrel and rotatably mounted in the frame, Said sleeve eX- tendingr beyond the trame substantially to the stopped portion oi' the mandrel when the mandrel is :in its :inner position.

18. ln a coil winding' device, a iframe, a mandrel mounted in the vtrame tor rotation and tor bodily movement along its axis, said mandrel extending' beyond the trame and having a spiral stepped portion at the end thereo't for gradually changing the diameter oit the coil, an outside sleeve keyed to the mandrel and rotatably mounted :in the trame, said Sleeve extending beyond the frame substantially to the stepped portion ot the mandrel when the mandrel is in its inner position, and having a spiral stepped portion for changing the diameter of the ooil from the maximum diameter of the mandrel to the diameter of the sleeve.

l). In a coil Winding device, a frame, a mandrel mounted in the frame for rotation and for bodily movement along its axis, said mandrel extending beyondv the trame and having a spiral stepped portion at the end thereof for gradually Changing the diameter of the coil, a. longitudinal slot ovtendiimi to said end4` a removable head at the end ot the mandrel, stops tor limiting the bodily movement o t the mandrel in the frame, an

Voutside sleeve keyed to the mandrel and rotatably mounted in the trame, said sleeve eietending,r beyond the frame substantially to the stepped portion of the mandrel when the mandrel is in its inner positions, and haviner a spiral stepped portion for changingr the diameter of the coil from the maximum diameter of the mandrel to the diameter ot the sleeve.

Q0. A coil Winding device having a rotatably mounted mandrel having al cylin drieal portion for Winding a. helical coil and a spiral stepped portion at the end thereof Yfor gradually changing the diameter ot the coil.

2l. A eoil winding device having'` a rotatably mounted mandrel having; a spiral stepped portion at the end therenit 'tor `renlually ehanefinI the diameter oit the coil, and a longitudinal slot extending to said end.

A coil Winding: device having a rotatablyinounted mandrel having;` a spiral stepped portion at the end thereof for gradually changing the diameter of the eoil, and a removible head ot larger diameter thanv the mandrel fastened to the end ot the mandrel. Y

A Coil windingr machine comprising; an inner mandrel, an outer mandrel encircling the inner mandrel, and menne connected to the mandrele and positively driving the inner mandrel and the outer mandrel.

2l. A coil Winding machine comprising an inner n'iandrel, an intam'ipressihle outer inandrel surrounding' the inner mandrel, and means supportingI and Aduiding; said mand rels for axial moveniont relative to the other.

Q5. A eoil winding machine comprising an inner mandrel, and an ineompreseible outer mandrel surround'ig the inner imii'idrel, and menne rigidly supporting and imiintafning,l the mandrels in spared, eoavial relation.

2G. A eoil winding machine comprising` a cylindrical inner mandrel, a circumtorenv tially continuous outer sleeve mandrel .sun rounding,T the inner mandrel and spaced therefrom, means for drivingv one ol.l said niandrels, and a sliding` key connection between said mandrels, permitting them to have relative movement axially but compeilinglr them to rotate in unison.

27. A coil Winding machine eoininieiupr an inner mandrel, an outer n'laudrel, and means for withdrawing one ot said mandrele axially with reference to the other.

In testimony whereof I have altlxed my sinnature to this specitication.

HERhlAN SGHLAICH. 

